SPECIFICATIONS FOR SPIRAL PIPE AND FITTINGS MINNEAPOLIS, MN 5850 Main Street N.E. Minneapolis, MN 55432 LOCALLY CALL: 763-572-0000 TOLL FREE: 1-800-328-1966 FAX: 763-572-1100 ROCKFORD, IL 5601 Sandy Hollow Road Rockford, IL 61109 LOCALLY CALL: 815-874-4600 TOLL FREE: 1-866-504-4600 FAX: 815-874-9979
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SPECIFICATIONS FOR SPIRAL PIPE AND FITTINGS...seam (i.e. stitch weld, riveted, tack weld or solid weld), standing seam or butt weld seam. These may be with or without duct sealant.
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Sheet Metal Connectors, Inc. (SMC) Single Wall Pipe and Fittingswith Complete Seal, E-Z Flange and Barrel Clamp or Standard Slip Connection
Single-Wall Spiral PipeSheet Metal Connectors, Inc. spiral pipe is formed from a coil of metal into a rigid steel tube with a 4-ply spiral lockseam. It has a smooth interior for low friction loss with the grooved seam entirely on the outside. This pipe has a resistance to crushing approximately 2 1/2 times that of longitudinal lockseam or welded pipe. Optional corrugations are available which increase the rigidity of the pipe by approximately 300%. Pipe sections can be joined together by an Complete Seal Spiral Pipe Connector, E-Z Flange with Barrel Clamp, E-Z Flange Jr. with Barrel Clamp, Standard Spiral Pipe Connector, or Companion Angle Rings.
May 2013
Single-Wall Materials DIAMETER MATERIAL THICKNESS ASTM TYPE LENGTH
3” - 60”** Stainless Steel 24 - 18 gauge A-240 304 or 316 1’ – 20’, 10’ Standard
*PVS specification book available** Call factory for sizes over 60” in diameter.
Note: SMACNA Testing and Research Institute verified that Sheet Metal Connectors, Inc. shop standards comply with the 2005-3rd edition of the SMACNA HVAC Duct Construction Standards.
5" 5"
5
5" 5"
5
5" 5"
5
Lateral section of 4-ply pressure-proof spiral seam.
Lateral section of grooved seam with optional corrugated grooves.
Optional culvert groove.
5”
5”
5”
Single-Wall FittingsSMC spiral fittings are manufactured with an elbow lock seam, lap
seam or butt weld seam. These may be with or without duct
sealant.
All fittings can be manufactured with:• Complete Seal Spiral Pipe System – 6” to 24” Diameter (even sizes)
• E-Z Flange Jr. with Barrel Clamp – 6” to 24” Diameter
• E-Z Flange with Barrel Clamp – 26” to 96” Diameter
• Standard Spiral Pipe End
• Companion Angle Ring
Elbow Lock Seam
Riveted Lap Seam
Standing Seam
Butt Weld Seam
Stich Weld
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Companion Angle Rings -Pressed and RolledCompanion angle rings are for end connections whenever a smooth interior surface or intermediate stiffening is required. Rings are manufactured from mild steel. Companion angle rings can be factory installed or shipped loose. Companion angle rings can be attached by solid weld, tack weld, or van stone connection. See companion angle ring size chart on page 20.
Single-Wall ConnectorsComplete Seal Fittings -6” to 24” DiameterComplete Seal fittings are manufactured from galvanized steel meeting spec ASTM A-653 (Lockforming quality). They feature a double legged EPDM gasket which creates a virtually airtight connection when slipped into spiral pipe. The gasket i s mechan ica l l y a t t ached to the f i t t i ng w i th a 180 degree hemmed edge. This hem gives added rigidity to the fittings, ensures that the gasket will never slip out of place and makes a safe rounded edge for the installer.*Complete Seal is currently available on Galvanized Fittings only.
E-Z Flange with Barrel Clamp -26” to 96” DiameterThe E-Z flange with barrel clamp can be factory installed or shipped loose for field installation. A set consists of two E-Z flanges and one barrel clamp. For field installation the installer attaches the E-Z flange to the pipe and fittings. Next the installer applies the gasket to one flange, mates the two flanges together and attaches the barrel clamp. Sheet Metal Connectors can also install E-Z flanges. Flanges are spot welded and internally sealed on all ends of the spiral pipe and fittings.
E-Z Flange Jr. with Barrel Clamp -6” to 24” DiameterThe E-Z flange jr. is a 5/8” flange turned out 90° on each end of the spiral pipe and fittings. The installer applies a gasket on one flange, mates the two flanges together, and attaches the barrel clamp. For field cuts a 5/8” flanged sleeve is available. Trim the spiral pipe to the measured length and attach the sleeve.
Standard Spiral Pipe ConnectorPipe to Pipe connections are made by using a fitting size coupling that slips inside the mating pipe sections. A stop bead runs around the middle of the coupling to center the coupling in the connection. Secure the connection by installing sheet metal screws through the outer shell of the duct, 1/2 inch from the stop bead.
Positive PressureBursting Pressure various gauges of spiral tubing
These tables are given only as a courtesy. Sheet Metal Connectors is not responsible for any results listed on these charts.
CLOSE CELL NEOPRENE GASKETNeoprene 1/4” x 1/2” (50’ rolls - 1500’ per box) E-Z Flange Jr.
Neoprene 1/4” x 3/4” (50’ rolls - 1500’ per box) E-Z Flange & TDC
4Two Piece Pressed Solid Welded Elbows
Pressed elbows and angles are resistance welded with copper on both the heel and throat. All pressed fittings are manufactured from extra deep drawing steel (EDDS) in accordance with ASTM-A653. Pressed fittings are precision drawn, tolerances must be within + or - .002 thickness to assure a quality product at all times. All pressed fittings are made of 24 Ga. or 22 Ga. Galvanized material with a G60 or better coating thickness and are chemically treated to retard white rust.
Full Sweep Standing Seam Elbows8”-30” will be a 5 gore one piece standard throat construction. 32” and larger in diameter 90 degree full sweep (1.5 x CL) elbows are fabricated using two 45 degree angles connected with an E-Z flange and barrel clamp unless otherwise specified.
Standing Seam Elbows & AnglesStanding Seam Elbows and AnglesStanding Seam fittings work well for medium pressure applications and offer an alternative to welded elbows and angles. These are available from 8” through 60” diameters and fabricated as heavy as 16 gauge. Other diameters and throat radiuses are available.* 42” and larger diameter 90 degree elbows are fabricated using two 45 degree angles connected with an E-Z Flange and Barrel Clamp unless otherwise specified.
All Fittings are 1.75” from Bead to End of Fitting.
All Fittings are 1.75” from Bead to End of Fitting.
Standard Elbows and Angles are fabricated from 20 gauge galvanized material. Other diameters, throat radiuses and gauges are available, please consult factory.
52” and larger in diameter 90 degree full sweep (1.5 x CL) elbows are fabricated using two 45 degree angles connected with an E-Z flange and barrel clamp unless otherwise specified.
90° Saddle TapDimensions to be listed as follows: A on B
90° Saddle Tap W/DamperDimensions to be listed as follows: A on BAlso available with 2” Insulation Extension
Concentric ReducerDimensions to be listed as follows: A, B
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Radius
ExistingPipe
Pressed FittingsAll stamped fittings are manufactured from extra deep drawing steel (EDDS) in accordance with ASTM–A653. This type of steel is manufactured by domestic steel mills and has some unique qualities. Stamped fittings are precision drawn, tolerances must be within + or - .002 thickness to assure a quality product at all times. All pressed fittings are made of 24 Ga. or 22 Ga. Galvanized material with a G60 or better coating thickness and is chemically treated to retard white rust.
Our High-Efficiency Takeoff is designed with a rectangular opening and an approximate 45° slope on the body. A flange is turned out on all four sides. The flange also has pre-punched holes for easy installation. There is a closed cell neoprene gasket (3/4” X 1/4”) applied to the flange to assure a tight seal.
High-Efficiency Takeoffs are fabricated from both 26 and 24 gauge galvanized steel. The fittings come with and without volume dampers. The adjustable dampers are assembled using a spring loaded retractable bearing and positive locking hardware.
Test data is available; call factory for more information. (Performed by ETL Testing Laboratories.)
Hole Cut Size A B C D E F 16” 13 1/2” 18” 22” 16” 20” 18” 13 1/2” 20” 24” 18” 22” 20” 13 1/2” 22 1/2” 26” 20” 24” 22” 17” 24” 28” 22” 26” 24” 17” 26” 30” 24” 28”
Double Rod Hanger18” - 60” Diameters, fabricated from 2 7⁄ 8” - 14 gauge galvanized7⁄ 16” Standard Bolt Hole for 3⁄ 8” Rod.9⁄ 16” Bolt Hole available on request.(Rod and hardware not included)
Single Rod Hangers3” - 16” Diameters, fabricated from 2 7⁄ 8” - 14 gauge galvanized7⁄ 16” Standard Bolt Hole for 3⁄ 8” Rod.9⁄ 16” Bolt Hole available on request.(Rod and hardware not included)
Light Gauge Round Pipe Hangers4” - 36” Diameters, fabricated from 1” – 16 gauge galvanized5⁄ 16” Standard Bolt Hole for 1⁄ 4” Bolt.(Bolt not included)
Heavy Volume Dampers14” - 24” 22 gauge, 3⁄ 8” square rod and H.D. Quadrants with stiffener brake26” - 30” 20 gauge, 3⁄ 8” square rod and H.D. Quadrants with stiffener brakeStandoff Quadrants and End Bearings also available.
Light Gauge Dampers4” - 20” Diameters fabricated from 24 gauge galvanized material. 1/4” Rapit Bearing provided with Stiffening beads on 10” diameters and larger.
CL18The CL18 Cable Lock is for use with 3/32” or 1/8” wire rope. These size wire ropes are available in 500 foot rolls. Depending upon the wire rope utilized, the CL18 has a working load limit of up to 225 lbs.
CL23The Maximun Load Range for each size wire rope incorporates a design safety factor of 5.1. The CL23 and wire rope combination should be sized for the job so that the projected load falls within the appropriate working load limit (WLL).
Wire Rope 1/8” 25-225 lbs
KV12 Bracket AssemblyThe KV12 bracket assembly enhances the suspension system by the addition of an integral bracket, which fastens the cable lock to the duck with sheet metal screws. The KV12 Bracket Assembly and CL12 have a working load limit of up to 150 lbs.
Bracket Assembly with CL12 100 per boxFor use with WC3 3/32” Wire Rope
Semi-circular flaps (butterfly damper) cover the exhaust stack when fan is off. When the fan is on, flaps are forced out of the way to provide a clear path for air movement. A built-in gutter system is designed to prevent rain and snow from entering stack. Made from galvanized spiral pipe for strength and durability; available in most sizes. Preassembled for immediate installation.*Fabricated from Hammerlock pipe.
ID Pipe OD Pipe Overall Size Length Length Length
12” - 17”* 18” 18” 26 1/2”
18” - 24” 18” 24” 32 1/2”
26” - 32” 20” 28” 36 1/2”
34” - 38” 20” 32” 40 1/2”
40” - 60” 20” 36” 44 1/2”
Floor SweepsFloor sweeps are manufactured from 20 gauge galvanized steel for strength and rigidity.A continuous piano hinge connects the doorto the fitting. Available in 6” standard. Other sizes can be fabricated.
10”12”
2”
5”
81⁄2”
6”
6”
4”
Rectangular DuctworkType-Flat
Round DuctworkType-Round
Access DoorsAccess Doors available in… • Galvanized • Aluminum • Stainless Steel (304 or 316) • PVC CoatedThe doors are also available in 16 ga. black iron when they are to be used for kitchen exhaust systems.
Cellular Sponge GasketA cellular sponge gasket, fixed to the inner plate, keeps the doors free of leaks at pressures tested to 20” w.g.
Access Doors for Round Ductwork10” X 6” – 22 Gauge Doors available to fit on 6” – 16” diameters.16” X 12” – 20 Gauge Doors available to fit on 18” – 36” diameters.
Access Doors for Rectangular Ductwork10” X 6” – 22 Gauge16” X 12” – 20 Gauge